Book cover



Oct. 13, 1925. 1,556,721

J. SCHADE BOOK COVER Filed April 28. 1925 35.1. EELS.

Jf/orney Patented Oct. 13, 1925.

mis ma,

J0EE SCHADE, or otYox'E, MASSACHUSETTS, ASSIGNOR To 'NATro-NAL BLA K5300:: COMPANY, or HOLYOKE, imSSAoH sETTs, A voL NTAm; RU T Assoc'mTro-uor 'cor nTn nSmnnAvme-as TRUSTEES owN s. Town M. T'OWNE,

' Am) 'F. w. WILSON;

, BOOK covEn,

" Application filed April 28, 1925. Serial No; 26,871.

To all whom/zit may concern.- Be it known that I,'JoHN Sermon, a c1t1-zen of the United States, residing at the city of Holyoke, inthe countyof Hampden and State of vMassachusetts, have invented certain new anduseful Improvements in make and usethe same.

Book Covers; and I dod'eclare the following to' be a full, clear, andexact description of the invention, such as will enable others skilledinthe art to which it appertains to v This invention relates to loose leafbinders, but more particularly has reference to, the securing of theloose leaf holding structure to-the bookcoven. 1

.The object of .the invention {is .to secure said structure to the coverinsuch a manner as to do .away with stitching, the employment ofadhesive substance, theperforation of the cover, lor. the formation ofclosed pockets in the back of the cover.

The description and claims which form a part of this application are tobe considered in connection with the accompanying drawing, whichillustrates the manner in which the invention is preferably utilized,and in which i Figure 1 is a broken perspective view of a book cover, asit appears after the first step has been taken in carrying out theinvention 1 Figure 2 is a similar view, showing the appearance of thecover after the second operation- Figure 3 is also a similar view,illustrating the cover as it appears after the third step has beentaken- Figure 4 is likewise a similar view, showing the completed coveras it appears after the last step in its construction has been taken,preparatory to securing the cover to the leaf holding structure- Figure5 is a detail perspective View of the metal sheath Figure 6 is a crosssection showing a loose leaf book equipped with this invention, and

Figures 7 and 8 are cross sections of the constructions shownrespectively at Figures 2 and 4.

Similar numerals of reference denote like parts in the several figuresof the drawing.

The book covers to which this invention relates are made of leather orany other suitable materialj adaptedfor, the carrying out of suchinvention. Y

Referring to'the drawings, 1 represents the back of the cover, and 2 theside covers, channels '3 being out throughout the length ofthe coverbetween the back and side covers for two, reasons, first, in order. thatthe side covers may be readily closed and opened, and second, in orderto formatthe inside of the back a raised ridgeor Strip 4 extending thefull length of. the back sothat the par tially formedbook cover-mayhave-the appearance shown at Figure 1. I

, S'lits 5 are then made within the opposite side edges of this ridge 4:which SlitseX-tend vlengthwise of said ridgeiandparallel with the facethereof and are of I 6 is a'metal sheath of a' length substantially thatof the slits, 5 and havingsits side edges bent downwardly and inwardlyto form flanged portions 7, while from the face of this sheath spurs 8are lanced which project upwardly.

This sheath is assembled on top of the ridge 4 with the flanged portions7 extending within the slits 5, as shown at Figure 3, and the saidsheath and flanges, and that part of the ridge contained between them,are then bent upwardly throughout their length, which operation ofbending will clamp said part of the ridge firmly between the sheath andflanges, and will also give the entire structure sobent an arcuate shapein cross section, so that it will be readily adapted to the bottom plateof the leaf holding structure, as willnow be described.

It is not deemed necessary herein to enter intov any detaileddescription of the construction and function of the bottom plate of aloose leaf structure, and therefore said any suitable plate and theremaining parts of such structhe use of a bottom plate.

The bottom plate of the loose leaf structure that is shown herein isdesignated by the numeral 9 and this plate is placed'on top of the metalsheath 6, curved in the The plate at its upper edges has the usualinwardly turned extending parts IO Which house the outer edges of theusual hock plates 11 which latter carry the circular abutting leafholding members 12.

lNhile the slits 5 are not shown extending through the ends o f-theridgenevertheless they may be extended through one or both of the ridge ends,this being a matter of mere detail. In some instances these slits Wouldextend through one or both ends of the ridge and the metal sheathWould-then he slid into position, and the bending Wardly of the sheathwould cause the side edges of the ridge to; be tightly clamped so thatthe sheath would not become acciden'tly displaced, or the ridge" may bestitched across the end'sl- But, as above stated, these are matters ofmere detail and have nothing Whatever to do with the actual invention.

What is claimed is:-"

1 A book cover for a loose leaf structure, comprising a. single piece ofmaterial having longitudinal channels extending throughout the length ofthe book between the back portion and the cover portions whereby a ridgeis formed constituting the inner face of the back portion, said ridgehaving slits formed in its 1 opposite side edges-, and a metal sheathupon the face of this ridgean'd havinginturned flanges; extending Withinsaid slits and provided with means for attachment to a looseieafstructure.-

2. A construction as in claim 1, in which the metal sheath and the sideedges of the ridge embraced by said sheath are bent upwardly so as to bearcuate in cross sect-ion.

3; The hereindescribed book cover, coinprising integral back and coverportions having therebetweren longitudinal: channels whereby thethickness of the cover is reduced along the inner extremities ot'theside covers and the inner face oi the hack portion formed into aridge-"like structure, the latter having its side edges siit parallelwith the'face of the ridge, and a metal sheath equipped for attachmenttea loose leaf structure and having downwardly and inwardlyextendingflange-portions that are housed Within said slits, said sheathwith its flanges being curved upwvandiy in cross tare hereto.

JOHN

